[jira] [Created] (AMBARI-4481) Add to the agent ability to download service scripts and hooks

["Dmitry Lysnichenko (JIRA)" <ji...@apache.org>]

Dmitry Lysnichenko created AMBARI-4481:
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             Summary: Add to the agent ability to download service scripts and hooks
                 Key: AMBARI-4481
                 URL: https://issues.apache.org/jira/browse/AMBARI-4481
             Project: Ambari
          Issue Type: Task
            Reporter: Dmitry Lysnichenko
            Assignee: Dmitry Lysnichenko


Ambari server shares some files at /var/lib/ambari-server/resources/ via HTTP. These files are accessible via url like http://hostname:8080/resources/jdk-6u31-linux-x64.bin . Among these files there are service scripts, templates and hooks. Agent has a cache of these files. Cache directory structure is similar to contents of a stacks folder at server. For example:
$ ls /var/lib/ambari-agent/cache
{code}
└── stacks
    └── HDP
        ├── 2.0.7
        │   ├── Accumulo
        │   └── Flume
        └── 2.0.8
            ├── Accumulo
            ├── Flume
            └── YetAnotherService
{code}
If files for some service, component and stack version is not available at cache, agent downloads appropriate files on first use.



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